Leaf-turner.



PATENTED OCT. 16, 1906.

0. P. HALVERSON LEAF TURNER.

APPLICATION FILED 113.24, 1906.

2 SHEETS-SHEET 1.

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PATENTED OCT. 16, 1906.

0. F. HALVERSON. LEAF TURNER.

APPLICATION FILED r113. 24, 1906.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

LEAF-TURNER.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed February 24, 1906. Serial No. 302,712.

To all whom it may concern.-

Be it known that I, OSCAR F. HALVERSON, a resident of Janesville, in thecounty of Rock and State of Wisconsin, have invented certain new anduseful Im rovements in Leaf-Turners; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to improvements in leaf-turners, the object of theinvention being to provide improved mechanism for moving a magnet toturn the leaves; and the invention consists in certain novel features ofconstruction and combinations and arran ements of parts as will be morefully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in elevation,illustrating my imrovements. Fig. 2 is a view in section. ig. 3 is asectional view illustrating the attachment of the clamp 9. Fig. 4 is adetail view showing the attachment of the magnet to the rod 14. Fig. 5is an enlarged rear view, partly broken away, showing the musicsupportand devices for o erating the arm or rod 14. Fig. 6 is a detafl viewshowing the shaft 13, spool 20, and rod 14.

1 represents my improved music-holder, which is preferably mounted on atelescoping rod 2, supported by a folding tripod 3.

The music holder or rack 1 may be made in a great many ways; but Iprefer to employ one of the folding type which permits it to be foldedinto small space for transportation.

To the back of the center bar of the music rack or holder 1 a plate 4 isclamped by bands 5, pivotally secured to the plate at one end, extendingover the face of the center bar and securely clamped by screws 6 andthumb-nuts 7, as clearly shown, and an upwardly-projecting rod 8 issecured adjustably to the center bar by clamps 9. This bar has a cord10, secured in openings in its upper end and is adapted to'be passeddown the fold of the music and secured to the plate 4 to hold the musicin proper position on the rack.

Below the music-supporting bar 11 of the rack the plate 4 is made withan car 12 stamped therefrom and having an opening alining with a similaropening in an ear 12* at the lower end of plate 4 to receive a shortshaft 13, on which a spool 20 is secured, and a rod 14, located at rightangles to shaft 13, is

secured thereto or made integral therewith. This rod 14 is flattened ormade angular to enter an angular opening in a bracket 1.5, adjustablysecured on the rod by a thumbscrew 16, and this bracket 15 sup orts amagnet 17 to attract metal disks or p ates 18 on the music leaves orsheets and turn the leaves, as will be hereinafter explained.

An eyebolt 19 is passed through spool 20 and sh aft 13, rigidly securingthem together, and a cord 21 is secured to the bolt 19, passed around.spool 20, thence through the opening in plate 4 over a pulley 22, anddown to a treadle 23. The treadle 23 is made approximately A shape, withits longitudinal bars pivotally secured together and connected by across-bar pivotally secured at one end and removably secured at itsother end to permit the treadle to be folded for shipment, and the freeends of the longitudinal bars are bent and sharpened, forming teeth 25to engage in the carpet and prevent movement of the treadle out ofpositon beneath the operator s foot. Pulley 22 is supported at the endof a wire or other spring 26, secured to plate 4 by a thumb-nut 28, andhas one or more coils between its ends to give to the spring thenecessary tension. The free end of the spring 26 is connected by a cord29 with the bolt 19 in spool 20, so that when the spool is turned bycord 21 to turn a leaf the cord 29 will be wound on the spool and drawthe spring 26 downward, and when pressure is released from the treadlethe sprin will draw the cord 29 outward, turn s 00 20, and return theparts to their norma positions.

To the right -hand lower corner of the music-holder or rack 1 a plate 30is clamped, as shown, to rest back of the corner of the leaves andreceive the shock of the returning magnet and hold the leaves inposition to be engaged by the magnet.

I do not confine myself to any particular manner of fastening the metalplates or disks 18 to the leaves, as this may be done in a great manyways, and the thin plates or disks used for the purpose will notdisfigure the music nor detract in anyway therefrom.

It will be observed that shaft 13 and spool 20 are located sli htly tothe left of the center of the music radk or holder, which compels themagnet to move in an arc of a circle different from the metal disks orplates 18, and hence the magnet as it nears the left of the rack afterit has thrown or turned the leaf 11 will draw away from the disk orplate and be ready to return to its former position without the leaf ithas turned. I

The operation of my improvements is as follows: The normal position ofthe ma is on the right-hand side of the rack or ho der gggmst the metaldisk on the music-leaf.

en pressure isapplied on treadle 23, the I cord 21 will be drawn down toturn spool 20, and thus swing the rod 14 and magnet 17, and theengagement of the magnetwith the metal disk 18 will cause the leaf tofollow the magnet until the latter reaches a point near its extremethrow, when the difference in the arcs through which the magnet and leafmove will cause the magnet to slide off the I metal disk and releaseitself therefrom. This turning movement of spool 20 winds cord 29thereon to pull down spring 26, and when pressure on the treadle isreleased spring 26 will pull cord 29 to turn spool 20 in the reversedirection and return rod 14 and magnet 17to their former and normalpositions to engage the metal disk on the next leaf to be turned. Theoperator is thereby enabled to turn the leaves by pressure of his footon treadle 23, and his hands are free for use with the musicalinstrument he is playing.

A great many made in the general form and arrangement of the partsdescribed without departing from my invention, and hence I- do notreslight changes mightbe strict myself to theprecise details set forth,but consider myself at liberty to make such slight changes andalterations as fairly fall within the s irit and scope of my invention.

Having fully described my invention, What Ilclaim as new, and desire tosecure by Letters Patent, is

1. In a leaf-turner, the combination with a leaf-support, of a spool, arod secured to the spool, a magnet on the rod, a spring, a pulleycarried by said spring, a treadle, a cord securedto the spool, woundthereon, passed isecured to the treadle, and the spring and spool. k 2'.In a leaf-turner, the combination with a leaf-support and metal piecesto be attached ;to the'leaves to be turned, of a spool located to theleft of the center'of said support, a rod secured to the spool, a magnetsecured to the rod a cord connecting fnectin'g the spring and spool, atreadle, and a passed over the pulley. i In testimony whereof I havesigned this specification in the presence of two subscribing witnesses.I OSCAR F. HALVERElON.

Witnesses ALEXANDER E. MATHESON, 1 JOHN M. WHITEHEAD.

,over the pulley carriedby the spring and l and adapted tov engage themetal pieces on the 1 leaves, aspring, a pulley thereon, a cord con-'- 55 cord connecting the spool and treadle and H

